EcoFlow Delta Pro vs Anker SOLIX F3800: Which Whole-Home Power Station Should You Buy?
Two flagship 6 kWh-class power stations, both around $3,000–$4,000, both LFP. We compared every spec, warranty term, ecosystem, and real-world use case to help you pick the right one for your home.
The EcoFlow Delta Pro and Anker SOLIX F3800 are the two most-recommended whole-home portable power stations under $4,000. They look similar on paper: both LFP, both expandable past 25 kWh, both five-year warranty. The two units are built around different philosophies. This is the head-to-head you need before committing $3,000+.
Quick verdict
- Buy the EcoFlow Delta Pro ($2,799) if you value the most polished software ecosystem, fastest wall recharge in class, and the broadest accessory selection.
- Buy the Anker SOLIX F3800 ($3,799) if you need 240 V split-phase output for hardwired loads, the highest continuous output in the segment, or expect to expand into permanent home solar.
Spec-by-spec comparison
| Spec | EcoFlow Delta Pro $2,799 base | Anker SOLIX F3800 $3,799 base |
|---|---|---|
| Battery capacity (base) | 3,600 Wh | 3,840 Wh |
| Max expansion | 25,000 Wh | 26,880 Wh |
| Battery chemistry | LFP (LiFePO4) | LFP (LiFePO4) |
| Cycle life to 80% | 3,500 cycles | 6,000 cycles |
| AC continuous output | 3,600 W | 6,000 W |
| AC surge | 7,200 W | 9,000 W |
| Boost mode (X-Boost / Surge) | 4,500 W | Not needed |
| 240 V split-phase | Yes (paired with 2nd unit) | Yes (single unit) |
| Solar input ceiling | 1,600 W | 2,400 W |
| Wall recharge time | 1.7 hours | 1.5 hours |
| Outlets (AC) | 5 | 6 |
| USB-C PD | 100 W ×2 | 100 W ×2 |
| Weight | 99 lb (with wheels) | 132 lb (with wheels) |
| Footprint | 25 × 11 × 17 in | 27 × 15 × 20 in |
| App quality | Mature, 4+ years iteration | Newer (2024) but well-designed |
| Home integration kit | Smart Home Panel 2 ($1,499) | Home Backup Kit ($899) |
| Warranty | 5 years | 5 years |
| Released | 2021 | 2024 |
Where the Delta Pro wins
Software and ecosystem maturity
EcoFlow has been iterating the Delta Pro app since 2021. It handles scheduled charging, time-of-use rate optimization, panel-level MPPT data, multi-unit pairing, and integration with the Smart Home Panel for transfer-switched home backup. Anker’s SOLIX app is well-designed, but it’s been in users’ hands for less than 18 months.
If you want to use the smart features (charging during off-peak rates, dispatching battery to grid loads automatically), the Delta Pro’s ecosystem is more proven.
Lower price for the same capacity tier
$2,799 base versus $3,799 base. That’s $1,000 you can put toward a second battery, more solar, or just save. If you don’t need 240 V split-phase or 6,000 W continuous, the Delta Pro is the rational choice.
Lighter and easier to maneuver
99 lb on built-in wheels versus 132 lb. For a basement or garage installation, the difference matters. The Delta Pro is the only 6 kWh-expandable unit you can plausibly load into a sedan trunk for a road trip.
Where the F3800 wins
True 240 V split-phase from a single unit
The F3800 ships with a NEMA 14-50 outlet and outputs full 240 V split-phase from one unit. The Delta Pro requires two paired units to deliver 240 V. If you want hardwired backup for a well pump, central HVAC short cycles, or an EV charger, the F3800 saves you $2,800 on the second Delta Pro you’d need.
6,000 W continuous + 9,000 W surge
The F3800 outputs 6,000 W continuously without boost-mode tricks. The Delta Pro maxes at 4,500 W with X-Boost (which works by reducing voltage, not by delivering 4,500 W of true output). For running a window AC, microwave, and fridge at once, the F3800 has real headroom.
6,000-cycle battery life
The F3800’s battery is rated for 6,000 cycles to 80% capacity, nearly double the Delta Pro’s 3,500. That’s the difference between 8 to 10 years of weekly use and 16 to 18 years. For a unit you’re investing $4,000 in, the longer cycle life is a real value advantage.
2,400 W solar input ceiling
The F3800 accepts up to 2,400 W of solar panel input, 50% more than the Delta Pro’s 1,600 W ceiling. If you plan to integrate with permanent rooftop solar (or just want faster off-grid recharge), the F3800 has the headroom.
Real-world scenarios
Scenario 1: Apartment renter with periodic outages
Pick the Delta Pro. You don’t need 240 V or 6 kW continuous; you need a unit that runs your fridge, internet, and laptops through 12 to 24 hour outages. The lower price and lighter weight make Delta Pro the right tool. Add a single 400 W solar panel for indefinite extension.
Scenario 2: Suburban homeowner with well pump and short outages
Pick the F3800. The well pump alone draws 800 to 1,500 W with a 2,500 W surge, plus you’ll want fridge, lights, internet on top. 240 V split-phase from a single unit covers it cleanly. Pair with the Home Backup Kit for transfer-switched operation.
Scenario 3: Off-grid cabin or semi-permanent install
Pick the F3800. 6,000-cycle battery, 2,400 W solar ceiling, and modular expansion to 26.9 kWh make it the right base for off-grid. The Delta Pro can do this too, but requires more accessories and reaches its expansion ceiling sooner.
Scenario 4: RV or van life with shore power backup
Pick the Delta Pro. Lighter weight, easier to maneuver, and the ecosystem maturity for managing multiple charge sources (shore, solar, alternator) is the right toolkit for nomadic use.
Direct affiliate options for both
Frequently asked questions
Delta Pro vs SOLIX F3800 FAQ
Can I daisy-chain two Delta Pros to match the F3800's output?
Yes. Two Delta Pros connected via the EcoFlow Double Voltage Hub deliver 240 V split-phase and 7,200 W continuous (matching the F3800's 6,000 W continuous, exceeding its surge). Total cost is roughly $5,600 + $399 hub = $5,999. The F3800 single-unit at $3,799 is significantly cheaper for equivalent functionality, though paired Delta Pros offer more total capacity (7,200 Wh vs 3,840 Wh).
Which one is better for permanent home solar integration?
The F3800 is purpose-built for this. Anker's Home Backup Kit ($899) and X1 home power system pair the F3800 directly with rooftop solar, grid input, and transfer switching for 6-10 branch circuits. EcoFlow's Smart Home Panel 2 ($1,499) does the same with the Delta Pro but is newer and has fewer integrators trained on it. For permanent solar integration, F3800.
What's the actual cost of expanding to whole-home backup with each?
Delta Pro path: 2× Delta Pro + Smart Home Panel 2 + 2× Smart Extra Battery = ~$8,500. F3800 path: 2× F3800 + Home Backup Kit + 2× expansion battery = ~$10,000. The F3800 path delivers more total capacity (~13,800 Wh vs ~10,400 Wh) but costs $1,500 more. For most households, one Delta Pro + one Smart Extra Battery ($4,300) covers 24-48 hour outages without needing the full whole-home setup.
How does the noise compare?
Both units run their fans aggressively above 50% load. The Delta Pro is quieter at low/medium loads (under 35 dB at 25% load) due to a more refined fan curve. The F3800 stays quieter at very high loads (around 50 dB at 80% load) thanks to a larger fan. For typical household use under 30% load, the Delta Pro is slightly quieter.
Are there better alternatives at this price point?
At $2,500-$4,000, these are the two definitive options. The Bluetti AC500 + B300S system is comparable but more modular (separate inverter and battery), which adds complexity. The Goal Zero Yeti 6000X uses NMC chemistry (shorter cycle life). Two Jackery Explorer 2000 Plus units paired ($3,000 total) match the Delta Pro's capacity but lack 240 V split-phase. For our money, EcoFlow Delta Pro and Anker SOLIX F3800 are the only two we'd recommend at this tier.
Bottom line
If price is the deciding factor and you don’t need 240 V hardwired backup, buy the EcoFlow Delta Pro. It’s $1,000 cheaper, lighter, and runs a more mature software ecosystem.
If you need to back up a well pump, central HVAC, or any 240 V load from a single unit, or if you plan to expand to permanent home solar, the Anker SOLIX F3800 is worth the premium.
Both units deliver LFP chemistry, expandable architecture, and five-year warranties. Either is a defensible $3,000+ purchase. The wrong answer is paired flagship NMC units (Goal Zero Yeti X) or any unit without expansion support.
Last reviewed: May 2026. We update spec parity and pricing within 30 days of each unit’s manufacturer changes.